1 763 147 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
31736647	8	24.9	old
253671011479	12	37.9	2008-07-15 07:46:17
18723187130751263513	20	64.0	2015-06-01 11:23:02
1741130225642159035442908433	28	90.5	2020-06-14 17:17:07

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	121 / 640

Estimated T-Level: 25.9 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-05	Oliver Kruse	25DE92BF5C830A1D	3	0	1	3
Verified (Factored)	2017-11-10	kkmrkkblmbrbk	25DE92BF5C830A1D	3	1469085	1	3
Verified	2020-06-15	LaurV	659C4FF431EAA4EA	4	806301	5	3
Verified	2020-06-16	Luigi Morelli	659C4FF431EAA4EA	4	1544945	5	3

P-1 factors

Date	Factor	B1	B2
2015-06-01	18723187130751263513	500000	15000000

History

Date	User	Type	Result
2020-06-16	Luigi Morelli	C-PRP	M1763147/31736647/253671011479/18723187130751263513/1741130225642159035442908433 : 659C4FF431EAA4EA PRP: Verified PRP without proof (not generated)
2020-06-15	LaurV	C-PRP	M1763147/31736647/253671011479/18723187130751263513/1741130225642159035442908433 : 659C4FF431EAA4EA PRP: Verified PRP without proof (not generated)
2020-06-14	nordi	F-ECM	Factor: 1741130225642159035442908433 / (ECM curve 103, B1=50000, B2=5000000, Sigma=92961743709637)
2017-11-10	kkmrkkblmbrbk	C-PRP	M1763147/31736647/253671011479/18723187130751263513 : 25DE92BF5C830A1D PRP: Verified PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1763147/31736647/253671011479/18723187130751263513 : 25DE92BF5C830A1D PRP: Verified PRP without proof (not generated)
2017-10-03	Oliver Kruse	C-PRP	M1763147/31736647/253671011479/18723187130751263513 : 25DE92BF5C830A1D PRP without proof (not generated)
2015-06-01	alpertron	F-PM1	Factor: 18723187130751263513 / (P-1, B1=500000, B2=15000000, E=12)
2008-07-15	J Feitsma	F	Factor: 253671011479